/*
 * Personal website design tokens
 * Material-inspired foundations: tonal surfaces, 48px targets, clear state
 * layers, restrained elevation, strong focus, and an 8px spacing grid.
 */
:root {
    --color-ink: #17201d;
    --color-ink-muted: #59635f;
    --color-paper: #f8f8f4;
    --color-surface: #ffffff;
    --color-surface-low: #f0f1eb;
    --color-sage: #dfe8df;
    --color-accent: #b84c2f;
    --color-accent-dark: #87351f;
    --color-border: #d9ddd6;
    --color-focus: #2962ff;
    --color-black: #000000;
    --color-white: #ffffff;
    --color-on-dark-muted: #aab6b0;
    --color-on-dark-border: rgb(255 255 255 / 20%);
    --color-on-dark-border-soft: rgb(255 255 255 / 15%);
    --font-display: "Newsreader", Georgia, serif;
    --font-body: "DM Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --size-display: clamp(3.25rem, 8vw, 7.5rem);
    --size-h1: clamp(2.75rem, 6vw, 5.75rem);
    --size-h2: clamp(2.15rem, 4vw, 3.75rem);
    --size-h3: clamp(1.25rem, 2vw, 1.6rem);
    --size-h4: 1.1rem;
    --size-body: 1rem;
    --size-small: 0.8125rem;
    --size-label: 0.75rem;
    --size-prose: 1.1rem;
    --size-card-title: 1.35rem;
    --size-note-title: 1.6rem;
    --size-row-action: 1.25rem;
    --size-disclaimer: 0.875rem;
    --size-video-icon: 0.8rem;
    --size-quote: clamp(1.5rem, 3vw, 2.25rem);
    --size-section-small: clamp(2rem, 4vw, 3.1rem);
    --size-intro: clamp(1.15rem, 2vw, 1.4rem);
    --size-tools-heading: 2rem;
    --size-valuation: clamp(1.75rem, 4vw, 2.5rem);
    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 3rem;
    --space-6: 4rem;
    --space-7: 6rem;
    --space-8: 8rem;
    --radius-small: 0.5rem;
    --radius-medium: 1rem;
    --radius-large: 1.5rem;
    --radius-pill: 999px;
    --shadow-1: 0 1px 2px rgb(23 32 29 / 8%), 0 2px 8px rgb(23 32 29 / 5%);
    --shadow-2: 0 12px 40px rgb(23 32 29 / 10%);
    --container: 76rem;
    --narrow: 50rem;
    --control-height: 3rem;
    --motion-fast: 160ms cubic-bezier(0.2, 0, 0, 1);
    --motion-standard: 260ms cubic-bezier(0.2, 0, 0, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--color-paper);
    color: var(--color-ink);
    font: 400 var(--size-body)/1.65 var(--font-body);
    -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration-thickness: 0.08em; text-underline-offset: 0.2em; }
button, input { font: inherit; }
button { color: inherit; }
::selection { background: var(--color-sage); }

h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 0.98;
    letter-spacing: -0.035em;
}
h1 { max-width: 13ch; margin-bottom: var(--space-4); font-size: var(--size-h1); }
h2 { max-width: 15ch; margin-bottom: var(--space-3); font-size: var(--size-h2); }
h3 { font-size: var(--size-h3); line-height: 1.15; }
h4 { font-size: var(--size-h4); line-height: 1.25; }

:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 3px; }
.sr-only {
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
    overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}
.skip-link {
    position: fixed; z-index: 1000; top: var(--space-2); left: var(--space-2);
    padding: 0.75rem 1rem; transform: translateY(-200%); background: var(--color-ink);
    color: var(--color-surface); border-radius: var(--radius-small);
}
.skip-link:focus { transform: translateY(0); }
.container { width: min(calc(100% - 2.5rem), var(--container)); margin-inline: auto; }
.narrow { max-width: var(--narrow); }
.section { padding-block: var(--space-8); }
.section-compact { padding-block: var(--space-6); }
.section-rule { border-top: 1px solid var(--color-border); }
.section-tint { background: var(--color-surface-low); }

.site-header {
    position: sticky; z-index: 100; top: 0; height: 5rem;
    background: color-mix(in srgb, var(--color-paper) 88%, transparent);
    border-bottom: 1px solid transparent; backdrop-filter: blur(14px);
    transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
}
.site-header.is-scrolled { border-color: var(--color-border); box-shadow: var(--shadow-1); }
.header-inner { display: flex; height: 100%; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 0.75rem; font-weight: 600; text-decoration: none; }
.brand-mark {
    display: grid; width: 2rem; height: 2rem; place-items: center;
    background: var(--color-ink); color: var(--color-paper); border-radius: 50%;
    font: 600 var(--size-body)/1 var(--font-display);
}
.primary-nav { display: flex; align-items: center; gap: var(--space-4); }
.language-switcher { display: flex; gap: 0.15rem; margin-left: 0.35rem; }
.primary-nav .language-switcher a { padding-inline: 0.55rem; border: 1px solid var(--color-border); border-radius: var(--radius-pill); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.06em; }
.primary-nav .language-switcher a[aria-current="true"] { background: var(--color-ink); border-color: var(--color-ink); color: var(--color-paper); }
.primary-nav a { position: relative; padding-block: 0.75rem; color: var(--color-ink-muted); text-decoration: none; }
.primary-nav a:hover, .primary-nav a[aria-current="page"] { color: var(--color-ink); }
.primary-nav a[aria-current="page"]::after {
    position: absolute; right: 0; bottom: 0.35rem; left: 0; height: 2px;
    background: var(--color-accent); content: "";
}
.nav-toggle { display: none; width: 3rem; height: 3rem; padding: 0; border: 0; background: transparent; }
.nav-toggle > span:not(.sr-only) { display: block; width: 1.35rem; height: 1px; margin: 0.35rem auto; background: currentColor; }

.hero { min-height: calc(100vh - 5rem); display: grid; align-items: center; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 3fr) minmax(16rem, 1fr); gap: var(--space-7); align-items: end; }
.hero h1 { max-width: 12ch; font-size: var(--size-display); }
.eyebrow {
    margin-bottom: var(--space-3); color: var(--color-accent); font-size: var(--size-small);
    font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase;
}
.hero-intro, .large-copy { max-width: 43rem; color: var(--color-ink-muted); font-size: var(--size-intro); line-height: 1.6; }
.hero-intro { margin-bottom: var(--space-4); }
.hero-intro > :last-child, .large-copy > :last-child, .section-intro > :last-child, .card-summary > :last-child, .tools-row > div > :last-child { margin-bottom: 0; }
.button-row { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }
.button {
    display: inline-flex; min-height: var(--control-height); padding: 0.75rem 1.35rem; align-items: center;
    justify-content: center; border: 1px solid transparent; border-radius: var(--radius-pill);
    cursor: pointer; font-weight: 600; text-decoration: none;
    transition: background var(--motion-fast), color var(--motion-fast), transform var(--motion-fast), box-shadow var(--motion-fast);
}
.button:hover { transform: translateY(-1px); box-shadow: var(--shadow-1); }
.button-primary { background: var(--color-ink); color: var(--color-surface); }
.button-primary:hover { background: var(--color-black); }
.button-secondary { border-color: var(--color-border); background: transparent; }
.button-secondary:hover { background: var(--color-surface-low); }
.text-link { display: inline-block; margin-top: var(--space-2); color: var(--color-accent-dark); font-weight: 600; text-decoration: none; }
.text-link span { display: inline-block; transition: transform var(--motion-fast); }
.text-link:hover span { transform: translateX(0.25rem); }
.hero-note { padding: var(--space-4); border-top: 1px solid var(--color-ink); }
.hero-note-index { display: block; margin-bottom: var(--space-4); color: var(--color-ink-muted); font-size: var(--size-small); }
.hero-note p { margin: 0; font-family: var(--font-display); font-size: var(--size-note-title); }
.hero-note > span:not(.hero-note-index) { display: block; width: 1px; height: 1.5rem; margin-left: 0.6rem; background: var(--color-border); }

.section-heading { max-width: 42rem; margin-bottom: var(--space-5); }
.section-heading > p:last-child { color: var(--color-ink-muted); }
.section-intro { max-width: 36rem; color: var(--color-ink-muted); }
.split-heading { display: grid; max-width: none; grid-template-columns: 1fr 1fr; gap: var(--space-6); align-items: end; }
.split-heading > p { max-width: 36rem; }
.table-wrap { overflow-x: auto; }
.analysis-table { width: 100%; border-collapse: collapse; text-align: left; }
.analysis-table th, .analysis-table td { padding: 1.35rem var(--space-2); border-bottom: 1px solid var(--color-border); }
.analysis-table thead th { color: var(--color-ink-muted); font-size: var(--size-small); font-weight: 500; letter-spacing: 0.03em; }
.analysis-table tbody tr { transition: background var(--motion-fast); }
.analysis-table tbody tr:hover { background: var(--color-surface); }
.analysis-table tbody tr.clickable-row { cursor: pointer; }
.analysis-table tbody tr.clickable-row:focus-visible { outline: 3px solid var(--color-focus); outline-offset: -3px; }
.analysis-table tbody th a { font-family: var(--font-display); font-size: var(--size-card-title); text-decoration: none; }
.analysis-table tbody th span { display: block; color: var(--color-ink-muted); font-size: var(--size-label); font-weight: 500; }
.analysis-table .format-badges { display: flex; gap: 0.35rem; margin-top: 0.4rem; }
.format-badges em { padding: 0.1rem 0.45rem; background: var(--color-sage); border-radius: var(--radius-pill); color: var(--color-ink); font-style: normal; letter-spacing: 0.03em; }
.analysis-table td { white-space: nowrap; }
.analysis-table td small { display: block; color: var(--color-ink-muted); font-size: var(--size-label); }
.row-link { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border-radius: 50%; color: var(--color-accent-dark); font-size: var(--size-row-action); text-decoration: none; }
.row-link:hover { background: var(--color-sage); }

.learn-promo { background: var(--color-sage); }
.feature-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: var(--space-7); }
.newsletter-card {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-6); align-items: center;
    padding: var(--space-6); background: var(--color-surface); border-radius: var(--radius-large); box-shadow: var(--shadow-1);
}
.newsletter-card h2 { font-size: var(--size-section-small); }
.newsletter-card p { max-width: 38rem; color: var(--color-ink-muted); }
.newsletter-form label { display: block; margin-bottom: var(--space-1); font-size: var(--size-small); font-weight: 600; }
.input-action { display: flex; gap: var(--space-1); }
.input-action input {
    min-width: 0; min-height: var(--control-height); flex: 1; padding: 0.75rem 1rem;
    border: 1px solid var(--color-border); background: var(--color-paper); border-radius: var(--radius-pill);
}
.input-action input:hover { border-color: var(--color-ink-muted); }
.form-note { margin: 0.5rem 0 0; font-size: var(--size-label); }
.g-recaptcha { margin-top: var(--space-2); }
.form-message { margin: var(--space-2) 0 0; padding: 0.75rem 1rem; border-radius: var(--radius-small); font-size: var(--size-small); }
.form-message p { margin: 0; }
.form-message-error { background: #fbe8e2; color: var(--color-accent-dark) !important; }
.form-message-success { background: var(--color-sage); color: var(--color-ink) !important; }
.unsubscribe-page { display: grid; min-height: 100vh; place-items: center; padding: var(--space-3); }
.unsubscribe-shell { width: min(100%, 31rem); }
.unsubscribe-card { padding: clamp(var(--space-4), 8vw, var(--space-6)); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-large); box-shadow: var(--shadow-2); }
.unsubscribe-card h1 { font-size: var(--size-section-small); }
.unsubscribe-copy { max-width: 30rem; color: var(--color-ink-muted); font-size: var(--size-intro); }
.unsubscribe-form { display: grid; gap: var(--space-2); margin-top: var(--space-4); }
.unsubscribe-form label { font-size: var(--size-small); font-weight: 600; }
.unsubscribe-form input[type="email"] { min-height: var(--control-height); padding: 0.75rem 1rem; border: 1px solid var(--color-border); background: var(--color-paper); border-radius: var(--radius-pill); }
.unsubscribe-form .button { justify-self: start; margin-top: var(--space-1); }
.tools-row { display: grid; grid-template-columns: 1fr 2fr; gap: var(--space-6); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.tools-row h2 { font-size: var(--size-tools-heading); }
.tools-row > div:last-child { max-width: 38rem; color: var(--color-ink-muted); }
.tools-logo { width: auto; max-width: min(100%, 20rem); max-height: 7rem; object-fit: contain; object-position: left center; }

.page-header { padding-top: var(--space-8); padding-bottom: var(--space-7); }
.page-header h1 { max-width: 14ch; }
.article-meta { display: flex; justify-content: space-between; gap: var(--space-2); margin-bottom: var(--space-4); color: var(--color-ink-muted); font-size: var(--size-small); text-transform: uppercase; letter-spacing: 0.08em; }
.article-header { padding-bottom: var(--space-7); }
.valuation-card { display: grid; grid-template-columns: repeat(2, 1fr); margin: var(--space-5) 0 0; border-top: 1px solid var(--color-border); }
.valuation-card div { padding: var(--space-3) 0; }
.valuation-card div + div { padding-left: var(--space-4); border-left: 1px solid var(--color-border); }
.valuation-card dt { margin-bottom: 0.35rem; color: var(--color-ink-muted); font-size: var(--size-small); }
.valuation-card dd { margin: 0; font-family: var(--font-display); font-size: var(--size-valuation); }
.article-body { max-width: var(--narrow); }
.prose { font-size: var(--size-prose); }
.prose > * { max-width: 43rem; margin-right: auto; margin-left: auto; }
.prose h2 { margin-top: var(--space-7); }
.prose h3 { margin-top: var(--space-5); }
.prose h4 { margin-top: var(--space-4); }
.prose p, .prose ul, .prose ol { margin-bottom: 1.5em; }
.rich-text--accent { color: var(--color-accent-dark); }
.rich-text--muted { color: var(--color-ink-muted); }
.rich-text--highlight { padding: 0.05em 0.2em; background: var(--color-sage); border-radius: 0.2em; }
.prose figure { max-width: 64rem; margin-block: var(--space-6); }
.prose figure img { width: 100%; border-radius: var(--radius-medium); }
.prose blockquote, .philosophy blockquote {
    margin-block: var(--space-6); padding: var(--space-4); border-left: 3px solid var(--color-accent);
    background: var(--color-surface-low); font: 500 var(--size-quote)/1.35 var(--font-display);
}
.prose blockquote p, .philosophy blockquote p { margin: 0; }
.prose blockquote cite { display: block; margin-top: var(--space-2); font: 500 var(--size-small)/1.5 var(--font-body); }
.disclaimer { margin-top: var(--space-7); padding: var(--space-3); border: 1px solid var(--color-border); border-radius: var(--radius-medium); color: var(--color-ink-muted); font-size: var(--size-disclaimer); }
.disclaimer strong { color: var(--color-ink); }
.disclaimer p { margin: 0.5rem 0 0; }

.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
.content-card, .concept-card {
    display: block; padding: var(--space-4); background: var(--color-surface); border: 1px solid var(--color-border);
    border-radius: var(--radius-medium); text-decoration: none; transition: transform var(--motion-standard), box-shadow var(--motion-standard), border-color var(--motion-standard);
}
.content-card:hover, .concept-card:hover { transform: translateY(-3px); border-color: transparent; box-shadow: var(--shadow-2); }
.content-card p, .concept-card p, .card-summary { color: var(--color-ink-muted); }
.card-kicker, .concept-card span { display: inline-block; margin-bottom: var(--space-3); color: var(--color-accent); font-size: var(--size-small); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }
.concept-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-2); }
.concept-card .card-summary { display: -webkit-box; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 3; }
.concept-card h2 { font-size: var(--size-card-title); }
.concept-card time { color: var(--color-ink-muted); font-size: var(--size-label); }

.course-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.8fr); gap: var(--space-7); align-items: start; }
.course-panel { position: sticky; top: 7rem; padding: var(--space-4); background: var(--color-surface); border-radius: var(--radius-medium); box-shadow: var(--shadow-1); }
.progress-heading { display: flex; justify-content: space-between; margin-bottom: var(--space-2); }
.progress-track { height: 0.35rem; overflow: hidden; margin-bottom: var(--space-4); background: var(--color-surface-low); border-radius: var(--radius-pill); }
.progress-track span { display: block; width: 0; height: 100%; background: var(--color-accent); transition: width var(--motion-standard); }
.lesson-list { margin: 0; padding: 0; list-style: none; }
.lesson-list li + li { border-top: 1px solid var(--color-border); }
.lesson-list li { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: var(--space-2); align-items: center; margin-inline: calc(var(--space-2) * -1); padding: var(--space-2); border-radius: var(--radius-small); }
.lesson-list li.is-current { background: var(--color-surface-low); }
.lesson-status { display: grid; width: 2.25rem; height: 2.25rem; padding: 0; place-items: center; border: 0; background: transparent; border-radius: 50%; cursor: pointer; }
.custom-checkbox { display: grid; width: 1.4rem; height: 1.4rem; place-items: center; border: 1px solid var(--color-border); border-radius: 50%; }
.lesson-status:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 1px; }
.lesson-status[aria-pressed="true"] .custom-checkbox { border-color: var(--color-accent); background: var(--color-accent); }
.lesson-status[aria-pressed="true"] .custom-checkbox::after { color: var(--color-white); content: "✓"; font-size: var(--size-label); }
.lesson-list a { display: flex; flex-direction: column; text-decoration: none; }
.lesson-list a span, .lesson-list small { color: var(--color-ink-muted); font-size: var(--size-label); }
.lesson-list a strong { font-weight: 500; }
.lesson-list li.is-complete a strong { color: var(--color-ink-muted); }
.lesson-course-header { padding-block: var(--space-2); border-bottom: 1px solid var(--color-border); background: var(--color-surface-low); }
.lesson-course-header .container { display: flex; justify-content: space-between; gap: var(--space-2); color: var(--color-ink-muted); font-size: var(--size-small); }
.lesson-course-header a { color: var(--color-ink); font-weight: 600; text-decoration: none; }
.lesson-section { padding-top: var(--space-6); }
.lesson-player { min-width: 0; }
.lesson-heading { margin-bottom: var(--space-5); }
.lesson-heading h1, .lesson-heading h2 { max-width: 16ch; margin-bottom: var(--space-3); }
.lesson-heading h2 { font-size: var(--size-h2); }
.lesson-meta { display: flex; justify-content: space-between; gap: var(--space-2); margin-bottom: var(--space-3); color: var(--color-accent-dark); font-size: var(--size-small); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.lesson-summary { max-width: 43rem; color: var(--color-ink-muted); font-size: var(--size-prose); }
.lesson-summary > :last-child { margin-bottom: 0; }
.lesson-navigation { display: flex; justify-content: space-between; gap: var(--space-2); margin-top: var(--space-7); padding-top: var(--space-3); border-top: 1px solid var(--color-border); }
.course-about { margin-top: var(--space-7); padding-top: var(--space-5); border-top: 1px solid var(--color-border); }
.empty-state { padding: var(--space-5); background: var(--color-surface); border-radius: var(--radius-medium); }

.video-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-2); }
.video-card { display: grid; grid-template-columns: auto 1fr auto; gap: var(--space-3); align-items: start; padding: var(--space-3); border-top: 1px solid var(--color-border); text-decoration: none; }
.video-card:hover { background: var(--color-surface); }
.video-card h3 { margin-bottom: 0.5rem; }
.video-card p { margin: 0; color: var(--color-ink-muted); }
.video-card small { color: var(--color-ink-muted); }
.video-icon { display: grid; width: var(--control-height); height: var(--control-height); place-items: center; background: var(--color-sage); border-radius: 50%; color: var(--color-accent-dark); font-size: var(--size-video-icon); }
.video-embed { position: relative; width: 100%; overflow: hidden; margin-bottom: var(--space-6); padding-top: 56.25%; border-radius: var(--radius-medium); background: var(--color-ink); }
.video-embed iframe, .video-embed embed, .video-embed object { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.about-hero { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: var(--space-7); align-items: center; }
.portrait { margin: 0; }
.portrait img { aspect-ratio: 6 / 7; object-fit: cover; border-radius: var(--radius-large); filter: saturate(0.75); }
.philosophy { background: var(--color-ink); color: var(--color-paper); }
.philosophy blockquote { padding: 0 0 0 var(--space-4); background: transparent; }
.principle-list { margin: var(--space-6) 0 0; padding: 0; list-style: none; }
.principle-list li { display: grid; grid-template-columns: 3rem 1fr; gap: var(--space-2); padding: var(--space-3) 0; border-top: 1px solid var(--color-on-dark-border); }
.principle-list span { color: var(--color-on-dark-muted); font-size: var(--size-small); }

.style-guide { display: grid; gap: var(--space-7); }
.swatches { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-2); }
.swatch { display: flex; min-height: 9rem; align-items: end; padding: var(--space-2); border: 1px solid var(--color-border); border-radius: var(--radius-medium); }
.swatch-ink { background: var(--color-ink); color: var(--color-white); }
.swatch-paper { background: var(--color-paper); }
.swatch-accent { background: var(--color-accent); color: var(--color-white); }
.swatch-sage { background: var(--color-sage); }
.type-display { font: 600 var(--size-display)/1 var(--font-display); letter-spacing: -0.04em; }

.site-footer { padding-block: var(--space-6); background: var(--color-ink); color: var(--color-paper); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: var(--space-5); }
.footer-brand { margin-bottom: var(--space-2); }
.footer-brand .brand-mark { background: var(--color-paper); color: var(--color-ink); }
.site-footer p { margin: 0; color: var(--color-on-dark-muted); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: start; }
.site-footer nav a { color: var(--color-paper); text-decoration: none; }
.copyright { grid-column: 1 / -1; padding-top: var(--space-3); border-top: 1px solid var(--color-on-dark-border-soft); font-size: var(--size-small); }

.cookie-banner { position: fixed; z-index: 200; right: var(--space-3); bottom: var(--space-3); left: var(--space-3); display: flex; max-width: 52rem; gap: var(--space-3); align-items: center; justify-content: space-between; padding: var(--space-3); margin-inline: auto; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-medium); box-shadow: var(--shadow-2); }
.cookie-banner[hidden] { display: none; }
.cookie-banner__content h2 { margin-bottom: 0.35rem; font-family: var(--font-body); font-size: 1rem; letter-spacing: 0; line-height: 1.3; }
.cookie-banner__content p { margin: 0; color: var(--color-ink-muted); font-size: var(--size-small); }
.cookie-banner__actions { display: flex; flex: 0 0 auto; gap: var(--space-1); }
.cookie-banner .button { min-width: 5.5rem; }

@media (max-width: 64rem) {
    .section { padding-block: var(--space-7); }
    .hero { min-height: auto; padding-block: var(--space-8); }
    .hero-grid, .feature-grid, .course-layout { gap: var(--space-5); }
    .concept-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 48rem) {
    .container { width: min(calc(100% - 2rem), var(--container)); }
    .section { padding-block: var(--space-6); }
    .nav-toggle { display: block; }
    .primary-nav {
        position: absolute; top: calc(100% + 1px); right: 0; left: 0; display: none;
        padding: var(--space-2); flex-direction: column; align-items: stretch;
        background: var(--color-paper); border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow-2);
    }
    .primary-nav.is-open { display: flex; }
    .primary-nav a { min-height: var(--control-height); padding: 0.75rem 1rem; }
    .language-switcher { padding: 0.5rem 1rem; margin: 0; }
    .hero-grid, .split-heading, .feature-grid, .newsletter-card, .tools-row, .about-hero, .course-layout { grid-template-columns: 1fr; }
    .hero-note { display: none; }
    .newsletter-card { padding: var(--space-4); }
    .course-panel { position: static; order: -1; }
    .video-grid, .card-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .copyright { grid-column: auto; }
    .cookie-banner { right: var(--space-2); bottom: var(--space-2); left: var(--space-2); align-items: stretch; flex-direction: column; }
    .cookie-banner__actions .button { flex: 1; }
    .analysis-table thead { position: absolute; overflow: hidden; width: 1px; height: 1px; clip: rect(0, 0, 0, 0); }
    .analysis-table, .analysis-table tbody, .analysis-table tr, .analysis-table th, .analysis-table td { display: block; }
    .analysis-table tr { position: relative; padding: var(--space-3) 3.5rem var(--space-3) 0; border-bottom: 1px solid var(--color-border); }
    .analysis-table th, .analysis-table td { padding: 0; border: 0; }
    .analysis-table td::before { color: var(--color-ink-muted); content: attr(data-label) ": "; font-size: var(--size-label); }
    .analysis-table td:last-child { position: absolute; top: 50%; right: 0; transform: translateY(-50%); }
}

@media (max-width: 34rem) {
    .input-action { align-items: stretch; flex-direction: column; }
    .concept-grid, .swatches { grid-template-columns: 1fr; }
    .valuation-card { grid-template-columns: 1fr; }
    .valuation-card div + div { padding-left: 0; border-top: 1px solid var(--color-border); border-left: 0; }
    .article-meta { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; }
}

/* Financial learning theme: an editorial Material system with deeper tonal hierarchy. */
:root {
    --color-ink: #092d2b;
    --color-ink-muted: #55706c;
    --color-paper: #f7f7f2;
    --color-surface: #fffefa;
    --color-surface-low: #e8f0ea;
    --color-sage: #d8eadf;
    --color-accent: #d66c42;
    --color-accent-dark: #a64725;
    --color-border: #c9d8d1;
    --color-focus: #265dca;
    --color-on-dark-muted: #b8cbc4;
    --shadow-1: 0 2px 4px rgb(9 45 43 / 8%), 0 8px 20px rgb(9 45 43 / 6%);
    --shadow-2: 0 18px 55px rgb(9 45 43 / 15%);
    --radius-medium: 1.25rem;
    --radius-large: 2rem;
}

body { background-image: radial-gradient(circle at 90% -5%, rgb(216 234 223 / 55%), transparent 24rem); }
.site-header { height: 5.5rem; }
.brand { gap: 0.8rem; letter-spacing: -0.02em; }
.brand-mark { width: 2.55rem; height: 2.55rem; border-radius: 0.8rem; background: var(--color-ink); color: #d8eadf; transform: rotate(-5deg); }
.brand-mark svg { width: 1.75rem; transform: rotate(5deg); }
.brand-name { display: grid; line-height: 1.05; }
.brand-name small { margin-top: 0.24rem; color: var(--color-ink-muted); font-size: 0.53rem; font-weight: 700; letter-spacing: 0.14em; }
.primary-nav { gap: 0.3rem; }
.primary-nav > a, .nav-dropdown-trigger { min-height: 3rem; padding: 0.75rem 0.9rem; border: 0; border-radius: var(--radius-pill); background: transparent; color: var(--color-ink-muted); cursor: pointer; font-size: 0.9rem; font-weight: 600; text-decoration: none; }
.primary-nav > a:hover, .primary-nav > a[aria-current="page"], .nav-dropdown-trigger:hover, .nav-dropdown-trigger[aria-expanded="true"] { background: var(--color-surface-low); color: var(--color-ink); }
.primary-nav a[aria-current="page"]::after { display: none; }
.nav-dropdown { position: relative; }
.nav-dropdown-trigger span { display: inline-block; margin-left: 0.2rem; transition: transform var(--motion-fast); }
.nav-dropdown-trigger[aria-expanded="true"] span { transform: rotate(180deg); }
.nav-dropdown-menu { position: absolute; top: calc(100% + 0.6rem); left: 0; display: grid; width: min(21rem, calc(100vw - 2rem)); padding: 0.55rem; visibility: hidden; opacity: 0; transform: translateY(-0.45rem); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 1rem; box-shadow: var(--shadow-2); transition: opacity var(--motion-fast), transform var(--motion-fast), visibility var(--motion-fast); }
.nav-dropdown.is-open .nav-dropdown-menu { visibility: visible; opacity: 1; transform: translateY(0); }
.nav-dropdown-menu a, .dropdown-empty { display: grid; gap: 0.15rem; padding: 0.85rem 1rem; border-radius: 0.7rem; color: var(--color-ink); font-size: 0.9rem; font-weight: 600; text-decoration: none; }
.nav-dropdown-menu a:hover { background: var(--color-surface-low); }
.nav-dropdown-menu a span, .dropdown-empty { color: var(--color-ink-muted); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; }
.dropdown-overview { grid-template-columns: 1fr auto; margin-bottom: 0.3rem; border-bottom: 1px solid var(--color-border); border-radius: 0.7rem 0.7rem 0.2rem 0.2rem !important; }
.dropdown-overview span { grid-column: 1 / -1; }
.dropdown-overview b { grid-column: 2; grid-row: 2; color: var(--color-accent); }

.hero { position: relative; min-height: min(48rem, calc(100vh - 5.5rem)); overflow: hidden; padding-top: var(--space-6); background: linear-gradient(115deg, transparent 0 65%, rgb(216 234 223 / 58%) 65%); }
.hero::after { position: absolute; right: -9rem; bottom: -13rem; width: 32rem; height: 32rem; border: 1px solid rgb(9 45 43 / 12%); border-radius: 50%; content: ""; }
.hero-grid { position: relative; z-index: 1; grid-template-columns: minmax(0, 1.55fr) minmax(19rem, 0.75fr); gap: clamp(3rem, 8vw, 9rem); }
.hero h1 { max-width: 11ch; font-size: clamp(4.3rem, 7.6vw, 7.7rem); line-height: 0.9; }
.eyebrow { display: flex; gap: 0.55rem; align-items: center; color: var(--color-accent-dark); }
.eyebrow-dot { display: block; width: 0.5rem; height: 0.5rem; background: var(--color-accent); border-radius: 50%; box-shadow: 0 0 0 0.27rem rgb(214 108 66 / 18%); }
.hero-intro { max-width: 36rem; color: var(--color-ink-muted); font-size: clamp(1.1rem, 1.5vw, 1.3rem); }
.hero-note { display: grid; gap: 0; padding: 1.5rem; border: 0; border-radius: var(--radius-large); background: var(--color-ink); color: var(--color-surface); box-shadow: var(--shadow-2); }
.hero-note-title { display: flex; justify-content: space-between; padding-bottom: 1.2rem; color: var(--color-on-dark-muted); border-bottom: 1px solid var(--color-on-dark-border); font-size: 0.67rem; font-weight: 700; letter-spacing: 0.12em; }
.hero-step { display: grid; grid-template-columns: 2rem 1fr; gap: 0.5rem; padding: 1.05rem 0; border-bottom: 1px solid var(--color-on-dark-border); }
.hero-step:last-child { padding-bottom: 0; border: 0; }
.hero-step > span { color: #8ec0a6; font-size: 0.7rem; font-weight: 700; }
.hero-step p { margin: 0; font-family: var(--font-display); font-size: 1.55rem; }
.hero-trust { position: relative; z-index: 1; display: flex; gap: 1.8rem; padding-top: 2.5rem; color: var(--color-ink-muted); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; }
.hero-trust span::before { margin-right: 0.5rem; color: var(--color-accent); content: "✦"; }

.value-proposition { background: var(--color-ink); color: var(--color-surface); }
.purpose-grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: var(--space-7); }
.value-proposition h2 { max-width: 13ch; }
.value-proposition .eyebrow { color: #8ec0a6; }
.purpose-copy { align-self: end; color: var(--color-on-dark-muted); font-size: 1.15rem; }
.purpose-points { display: grid; gap: 0.75rem; margin-top: var(--space-4); color: var(--color-surface); font-size: 0.9rem; font-weight: 600; }
.purpose-points span { padding-top: 0.75rem; border-top: 1px solid var(--color-on-dark-border); }
.purpose-points b { display: inline-block; width: 2.3rem; color: #8ec0a6; font-size: 0.7rem; letter-spacing: 0.08em; }

.research-section { background: linear-gradient(var(--color-paper), var(--color-surface-low)); }
.analysis-table { overflow: hidden; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-medium); box-shadow: var(--shadow-1); }
.analysis-table th, .analysis-table td { padding: 1.35rem 1.5rem; }
.analysis-table tbody tr:hover { background: #f1f7f2; }
.learn-promo { position: relative; overflow: hidden; background: #d8eadf; }
.learn-promo::after { position: absolute; top: -11rem; right: -6rem; width: 31rem; height: 31rem; border: 1px solid rgb(9 45 43 / 12%); border-radius: 50%; content: ""; }
.feature-grid { position: relative; z-index: 1; }
.section-number { display: inline-block; margin: 0 0 1.5rem; color: var(--color-ink-muted); font-size: 0.68rem; font-weight: 700; letter-spacing: 0.1em; }
.learning-path { display: grid; gap: 0.6rem; margin: 1.8rem 0; font-size: 0.86rem; font-weight: 600; }
.learning-path span { padding: 0.7rem 0; border-bottom: 1px solid rgb(9 45 43 / 16%); }
.learning-path span::before { display: inline-grid; width: 1.35rem; height: 1.35rem; margin-right: 0.7rem; place-items: center; background: var(--color-ink); border-radius: 50%; color: white; content: "→"; font-size: 0.7rem; }
.newsletter-card { border: 1px solid var(--color-border); box-shadow: var(--shadow-2); }
.site-footer .brand-mark { color: var(--color-ink); transform: rotate(-5deg); }
.site-footer .brand-name small { color: var(--color-on-dark-muted); }

/* Index-page heroes use simple editorial diagrams in place of generic stock imagery. */
.page-header { position: relative; overflow: hidden; padding-block: clamp(5rem, 9vw, 8rem); background: linear-gradient(112deg, transparent 0 58%, rgb(216 234 223 / 54%) 58%); }
.page-header::after { position: absolute; right: -13rem; bottom: -18rem; width: 38rem; height: 38rem; border: 1px solid rgb(9 45 43 / 12%); border-radius: 50%; content: ""; }
.page-header-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(19rem, 0.8fr); gap: clamp(3rem, 8vw, 9rem); align-items: center; }
.page-header-copy h1 { max-width: 11ch; margin-bottom: var(--space-3); font-size: clamp(3.4rem, 6.5vw, 6.5rem); }
.page-header-copy .hero-intro { margin-bottom: 0; }
.page-header-art { position: relative; display: grid; min-height: 20rem; place-items: center; }
.page-header-art::before { position: absolute; width: min(100%, 20rem); aspect-ratio: 1; border: 1px solid rgb(9 45 43 / 13%); border-radius: 50%; content: ""; }
.art-chart { position: relative; display: flex; width: 18rem; height: 12rem; gap: 1rem; align-items: end; padding: 1.3rem; border-radius: var(--radius-large); background: var(--color-ink); box-shadow: var(--shadow-2); transform: rotate(-5deg); }
.art-chart::before { position: absolute; inset: 1.3rem; border-bottom: 1px solid rgb(255 255 255 / 28%); border-left: 1px solid rgb(255 255 255 / 28%); content: ""; }
.art-chart span { position: relative; z-index: 1; width: 100%; background: #8ec0a6; border-radius: 0.2rem 0.2rem 0 0; }
.art-chart span:nth-child(1) { height: 29%; }.art-chart span:nth-child(2) { height: 48%; }.art-chart span:nth-child(3) { height: 41%; }.art-chart span:nth-child(4) { height: 73%; background: #d66c42; }
.art-chart i { position: absolute; z-index: 2; top: 3.25rem; right: 1.7rem; width: 10.5rem; height: 4.8rem; border-top: 2px solid #fffefa; border-radius: 50% 30% 0 0; transform: rotate(-15deg); }
.art-path { position: relative; display: flex; width: 20rem; align-items: center; justify-content: space-between; padding: 3rem 1rem; border-radius: var(--radius-large); background: var(--color-surface); box-shadow: var(--shadow-2); transform: rotate(4deg); }
.art-path::before { position: absolute; right: 2.7rem; left: 2.7rem; height: 2px; background: var(--color-border); content: ""; }
.art-path span { position: relative; z-index: 1; display: grid; width: 4rem; aspect-ratio: 1; place-items: center; background: var(--color-ink); border: 0.5rem solid var(--color-surface); border-radius: 50%; color: #fffefa; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em; }.art-path span:nth-of-type(2) { background: var(--color-accent); }.art-path i { display: none; }
.art-pages { position: relative; width: 15rem; height: 17rem; transform: rotate(5deg); }.art-pages span { position: absolute; width: 10rem; height: 13rem; border: 1px solid var(--color-border); border-radius: 0.6rem; background: var(--color-surface); box-shadow: var(--shadow-1); }.art-pages span::after { position: absolute; top: 2.3rem; right: 1.4rem; left: 1.4rem; height: 1px; background: var(--color-border); box-shadow: 0 1.3rem 0 var(--color-border), 0 2.6rem 0 var(--color-border), 0 3.9rem 0 var(--color-border); content: ""; }.art-pages span:nth-child(1) { top: 2rem; left: 0; transform: rotate(-11deg); }.art-pages span:nth-child(2) { top: 1rem; right: 0; transform: rotate(8deg); }.art-pages span:nth-child(3) { z-index: 1; top: 1.7rem; left: 2.6rem; border-top: 0.45rem solid var(--color-accent); }
.about-hero { position: relative; z-index: 1; }.about-portrait-wrap { position: relative; }.about-portrait-wrap::before { position: absolute; top: -1.3rem; right: -1.3rem; width: 72%; aspect-ratio: 1; border: 1px solid rgb(9 45 43 / 17%); border-radius: 50%; content: ""; }.portrait, .about-art { position: relative; z-index: 1; }.portrait img { box-shadow: var(--shadow-2); }.about-art { min-height: 23rem; border-radius: var(--radius-large); background: var(--color-ink); }.about-art::before { width: 15rem; border-color: rgb(255 255 255 / 24%); }.art-orbit { position: relative; width: 11rem; aspect-ratio: 1; border: 1px solid rgb(255 255 255 / 38%); border-radius: 50%; }.art-orbit::before { position: absolute; inset: 22%; border-radius: 50%; background: #8ec0a6; content: ""; }.art-orbit span { position: absolute; top: -0.5rem; right: 1rem; width: 1.5rem; aspect-ratio: 1; border-radius: 50%; background: #d66c42; }
.analysis-article-header { position: relative; overflow: hidden; padding-block: clamp(4rem, 7vw, 7rem); background: linear-gradient(112deg, transparent 0 62%, rgb(216 234 223 / 54%) 62%); }.analysis-article-header::after { position: absolute; top: -20rem; right: -13rem; width: 38rem; aspect-ratio: 1; border: 1px solid rgb(9 45 43 / 12%); border-radius: 50%; content: ""; }.analysis-article-header-grid { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(16rem, 0.75fr); gap: clamp(3rem, 8vw, 8rem); align-items: center; }.analysis-article-header h1 { max-width: 12ch; }.analysis-detail-art { position: relative; display: grid; min-height: 20rem; place-items: center; }.analysis-detail-art .art-chart { transform: rotate(5deg); }.analysis-detail-art-label { position: absolute; right: 0; bottom: 0.3rem; color: var(--color-ink-muted); font-size: 0.64rem; font-weight: 700; letter-spacing: 0.14em; line-height: 1.6; }

/* Article and analysis titles sit just above the section-heading scale. */
.page-header--article .page-header-copy h1,
.analysis-page .analysis-article-header h1 { max-width: 15ch; font-size: calc(var(--size-h2) + 0.15rem); }
.article-feature-image { margin: 0 0 var(--space-5); }
.article-feature-image img { width: 100%; border-radius: var(--radius-medium); box-shadow: var(--shadow-1); }

@media (max-width: 48rem) {
    .site-header { height: 5rem; }
    .primary-nav { gap: 0.2rem; }
    .primary-nav > a, .nav-dropdown-trigger { width: 100%; padding: 0.75rem 1rem; text-align: left; }
    .nav-dropdown-menu { position: static; display: none; width: 100%; margin: 0.15rem 0 0; visibility: visible; opacity: 1; transform: none; box-shadow: none; }
    .nav-dropdown.is-open .nav-dropdown-menu { display: grid; }
    .hero { min-height: auto; padding-bottom: var(--space-7); background: linear-gradient(150deg, transparent 0 70%, rgb(216 234 223 / 58%) 70%); }
    .hero-grid, .purpose-grid { grid-template-columns: 1fr; }
    .page-header { padding-block: var(--space-7); background: linear-gradient(150deg, transparent 0 67%, rgb(216 234 223 / 54%) 67%); }
    .page-header-grid { grid-template-columns: 1fr; gap: var(--space-4); }
    .page-header-art { min-height: 13rem; max-width: 23rem; }
    .page-header-copy h1 { font-size: clamp(3rem, 13vw, 4.5rem); }
    .about-hero { gap: var(--space-5); }
    .analysis-article-header { background: linear-gradient(150deg, transparent 0 67%, rgb(216 234 223 / 54%) 67%); }.analysis-article-header-grid { grid-template-columns: 1fr; gap: var(--space-4); }.analysis-detail-art { display: flex; min-height: 13rem; max-width: 23rem; flex-direction: column; align-items: center; }.analysis-detail-art-label { position: static; align-self: flex-end; margin-top: 2rem; }
    .hero-note { display: grid; max-width: 28rem; }
    .hero-trust { flex-wrap: wrap; gap: 0.8rem 1.2rem; padding-top: 2rem; }
    .course-panel { order: initial; }
    .lesson-navigation { align-items: stretch; flex-direction: column-reverse; }
    .lesson-navigation .button { width: 100%; }
}

@media (max-width: 34rem) {
    .brand-name small { display: none; }
    .hero h1 { font-size: clamp(3.2rem, 16vw, 4.3rem); }
}